*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f8fbff;
  --blue: #2b8fd9;
  --blue-dark: #1a6fb5;
  --blue-light: #5aade8;
  --sky: #e8f4fd;
  --sky-deep: #d4ebfa;
  --text: #1a2b3c;
  --muted: #6b7c8d;
  --white: #ffffff;
  --border: rgba(43, 143, 217, 0.12);
  --shadow: 0 16px 48px rgba(43, 143, 217, 0.1);
  --shadow-lg: 0 24px 64px rgba(43, 143, 217, 0.15);
  --radius: 16px;
  --radius-lg: 24px;
  --nav-h: 72px;
  --transition: 0.25s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; height: auto; }

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 8px 24px rgba(43, 143, 217, 0.3);
}

.btn--primary:hover { background: var(--blue-dark); }

.btn--outline {
  background: var(--white);
  border: 1px solid rgba(43, 143, 217, 0.35);
  color: var(--blue-dark);
}

.btn--outline:hover {
  border-color: var(--blue);
  box-shadow: 0 4px 16px rgba(43, 143, 217, 0.12);
}

.btn--white {
  background: #fff;
  color: var(--blue-dark);
}

.btn--lg { padding: 14px 28px; font-size: 15px; }

.btn--block { width: 100%; }

/* ---- Navigation ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(248, 251, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition), background var(--transition);
}

.nav.is-scrolled {
  box-shadow: 0 4px 24px rgba(26, 43, 60, 0.06);
  background: rgba(255, 255, 255, 0.96);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--blue-dark);
  flex-shrink: 0;
}

.logo__icon {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 14px rgba(43, 143, 217, 0.35);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  transition: color var(--transition);
  position: relative;
}

.nav__links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
  transition: width var(--transition);
}

.nav__links a:hover,
.nav__links a.is-active { color: var(--blue-dark); }

.nav__links a.is-active::after,
.nav__links a:hover::after { width: 100%; }

.nav__cta { flex-shrink: 0; }

.nav__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: 10px;
}

.nav__burger span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__mobile {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 20px 24px 28px;
  box-shadow: 0 12px 40px rgba(26, 43, 60, 0.08);
  z-index: 199;
  transform: translateY(-8px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
}

.nav__mobile.is-open {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.nav__mobile a {
  display: block;
  padding: 12px 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}

.nav__mobile a.is-active { color: var(--blue); }

.nav__mobile .btn { margin-top: 16px; width: 100%; }

/* ---- Page hero (inner pages) ---- */
.page-hero {
  background: linear-gradient(135deg, var(--sky) 0%, var(--bg) 60%);
  padding: 48px 0 56px;
  border-bottom: 1px solid var(--border);
}

.page-hero__breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
}

.page-hero__breadcrumb a { color: var(--blue); }

.page-hero__breadcrumb a:hover { text-decoration: underline; }

.page-hero__breadcrumb span { color: var(--muted); }

.page-hero h1 {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 17px;
  color: var(--muted);
  max-width: 56ch;
}

/* ---- Sections ---- */
.section { padding: 80px 0; }

.section--alt { background: var(--white); }

.section-head {
  text-align: center;
  margin-bottom: 48px;
}

.section-head__label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}

.section-head h2 {
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 700;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--muted);
  max-width: 52ch;
  margin: 0 auto;
}

/* ---- Hero (home) ---- */
.hero {
  padding: 48px 0 80px;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--sky);
  color: var(--blue-dark);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero__title {
  font-size: clamp(36px, 4.5vw, 52px);
  font-weight: 700;
  line-height: 1.12;
  margin-bottom: 18px;
}

.hero__title em {
  font-style: normal;
  color: var(--blue);
}

.hero__sub {
  color: var(--muted);
  font-size: 17px;
  max-width: 44ch;
  margin-bottom: 28px;
}

.hero__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero__stats {
  display: flex;
  gap: 36px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.hero__stats b {
  display: block;
  font-size: 28px;
  color: var(--blue-dark);
  line-height: 1.2;
}

.hero__stats span {
  font-size: 13px;
  color: var(--muted);
}

.hero__visual { position: relative; }

.hero__img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.hero__card {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 18px 22px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.hero__card b {
  color: var(--blue);
  font-size: 26px;
  display: block;
}

.hero__card span {
  font-size: 13px;
  color: var(--muted);
}

/* ---- Cards grid ---- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.cards-grid--2 { grid-template-columns: repeat(2, 1fr); }

.cards-grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--white);
  border-radius: 20px;
  border: 1px solid var(--border);
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

/* ---- Service card ---- */
.service-card { padding: 32px 28px; }

.service-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--sky);
  display: grid;
  place-items: center;
  font-size: 24px;
  margin-bottom: 18px;
}

.service-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 16px;
}

.service-card__price {
  font-weight: 700;
  font-size: 18px;
  color: var(--blue);
}

.service-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
}

/* ---- Doctor card ---- */
.doctor-card { overflow: hidden; text-align: center; }

.doctor-card img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.doctor-card__body { padding: 24px 20px; }

.doctor-card h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.doctor-card__role {
  font-size: 14px;
  color: var(--blue);
  font-weight: 600;
  margin-bottom: 10px;
}

.doctor-card p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

.doctor-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-top: 14px;
}

.doctor-card__tags span {
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--sky);
  color: var(--blue-dark);
}

/* ---- Features ---- */
.features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature {
  text-align: center;
  padding: 28px 20px;
}

.feature__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 16px;
  background: var(--sky);
  display: grid;
  place-items: center;
  font-size: 26px;
}

.feature h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.feature p {
  font-size: 13px;
  color: var(--muted);
}

/* ---- CTA banner ---- */
.cta-banner {
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.cta-banner h2 {
  font-size: clamp(24px, 3vw, 32px);
  margin-bottom: 10px;
}

.cta-banner p { opacity: 0.9; max-width: 48ch; }

/* ---- Calculator ---- */
.calculator {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.calculator-panel {
  background: linear-gradient(135deg, var(--blue), var(--blue-dark));
  border-radius: var(--radius-lg);
  padding: 40px;
  color: #fff;
}

.calculator-panel h2 {
  font-size: 26px;
  margin-bottom: 12px;
}

.calculator-panel p {
  opacity: 0.9;
  margin-bottom: 24px;
  font-size: 15px;
}

.calculator-form {
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(8px);
}

.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  opacity: 0.95;
}

.form-group select,
.form-group input[type="number"] {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-family: inherit;
  font-size: 15px;
}

.form-group select option { color: var(--text); background: #fff; }

.calculator-form label:has(input[type="checkbox"]) {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.4;
  cursor: pointer;
  margin-bottom: 12px;
}

.calculator-form input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: #fff;
}

.calculator-result {
  margin-top: 8px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.calculator-result__label {
  font-size: 13px;
  opacity: 0.85;
  margin-bottom: 4px;
}

.calculator-result__value {
  font-size: 36px;
  font-weight: 700;
}

.calculator-result__note {
  font-size: 12px;
  opacity: 0.75;
  margin-top: 8px;
}

/* ---- Price table ---- */
.price-table-wrap {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.price-table {
  width: 100%;
  border-collapse: collapse;
}

.price-table th,
.price-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.price-table th {
  background: var(--sky);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--blue-dark);
}

.price-table td { font-size: 15px; }

.price-table tr:last-child td { border-bottom: none; }

.price-table tr:hover td { background: rgba(232, 244, 253, 0.4); }

.price-table__price {
  font-weight: 700;
  color: var(--blue);
  white-space: nowrap;
}

/* ---- Forms ---- */
.form-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 40px;
  max-width: 560px;
  margin: 0 auto;
}

.form-card h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.form-card > p {
  color: var(--muted);
  margin-bottom: 28px;
  font-size: 15px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-field { margin-bottom: 18px; }

.form-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid #dde8f0;
  background: var(--bg);
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(43, 143, 217, 0.15);
}

.form-field textarea { min-height: 100px; resize: vertical; }

.form-field input::placeholder,
.form-field textarea::placeholder { color: #a0b0be; }

/* ---- Success state ---- */
.form-success {
  display: none;
  text-align: center;
  padding: 48px 24px;
}

.form-success.is-visible { display: block; }

.form-success__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--sky);
  display: grid;
  place-items: center;
  font-size: 36px;
}

.form-success h3 {
  font-size: 24px;
  margin-bottom: 12px;
  color: var(--blue-dark);
}

.form-success p {
  color: var(--muted);
  margin-bottom: 24px;
}

.appointment-form.is-hidden { display: none; }

/* ---- Info blocks ---- */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.info-block {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
}

.info-block__icon {
  font-size: 28px;
  margin-bottom: 14px;
}

.info-block h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.info-block p {
  font-size: 14px;
  color: var(--muted);
}

/* ---- Footer ---- */
.footer {
  background: var(--text);
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 32px;
  margin-top: 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer__brand .logo {
  color: #fff;
  margin-bottom: 16px;
}

.footer__brand .logo__icon { box-shadow: none; }

.footer__brand p {
  font-size: 14px;
  line-height: 1.7;
  max-width: 32ch;
}

.footer__col h4 {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}

.footer__col ul li { margin-bottom: 10px; }

.footer__col a {
  font-size: 14px;
  transition: color var(--transition);
}

.footer__col a:hover { color: var(--blue-light); }

.footer__contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
}

.footer__bottom {
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
}

.footer__bottom a { color: var(--blue-light); }

/* ---- Scroll reveal ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

[data-reveal-delay="1"] { transition-delay: 0.1s; }
[data-reveal-delay="2"] { transition-delay: 0.2s; }
[data-reveal-delay="3"] { transition-delay: 0.3s; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .cards-grid--4 { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .nav__links,
  .nav__cta { display: none; }

  .nav__burger { display: flex; }

  .nav__mobile { display: block; }

  .hero__grid,
  .calculator,
  .cards-grid,
  .cards-grid--2,
  .cards-grid--4,
  .info-grid,
  .cta-banner { grid-template-columns: 1fr; }

  .hero__visual { order: -1; }

  .hero__card {
    left: auto;
    right: 16px;
    bottom: -16px;
  }

  .cta-banner { text-align: center; }

  .cta-banner .btn { width: 100%; }

  .form-row { grid-template-columns: 1fr; }

  .price-table-wrap { overflow-x: auto; }

  .price-table { min-width: 520px; }
}

@media (max-width: 600px) {
  .section { padding: 56px 0; }

  .hero__stats { gap: 20px; flex-wrap: wrap; }

  .features { grid-template-columns: 1fr; }

  .footer__grid { grid-template-columns: 1fr; }

  .form-card { padding: 28px 20px; }

  .calculator-panel { padding: 28px 20px; }
}